Year 207 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Nero and Salinator (or, less frequently, year 547 Ab urbe condita). The denomination 207 BC for this year has been used since the early medieval period, when the Anno Dominicalendar era became the prevalent method in Europe for naming years.

Nabis, a Syrian sold into slavery, rises to power in Sparta and becomes regent of the young Spartan king, Pelops, following the death of Machanidas. Nabis soon overthrows Pelops, claiming to be a descendent of the Eurypontid Spartan king Demaratus. Nabis then starts a social revolution which will lead to the freeing of all the helots, the destruction of the ruling oligarchy, the redistribution of land and the cancelling of debts.